Humans may be the only mammal that lacks Neu5Gc, having Neu5Ac instead, because of a mutation that disables an enzyme that converts Neu5Ac to Neu5Gc.
Gene may have originated about 2 millionn years ago.
This and other genetic differences may explain susceptibilities to different diseases like diferent types of malaria, arthritis, alzheimer's and multiple sclerosis.
Saturday 5 July 2008
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